Elena’s bus runs every 20 minutes. if she arrives at her bus stop at a random time, what is the probability that she will have to wait at least 5 minutes for the bus if it is running on schedule

20 minutes - 5 minutes = 15 minutes.

The probability of waiting at least 5 minutes = 15/20 = 3/4 = 75%

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)